Results 81 to 90 of about 2,586 (200)
Xenoliths in meteorites: Insights into the dynamics of material exchange between asteroids
Meteoritics &Planetary Science, EarlyView.Abstract A minor fraction of meteorites contains xenoliths, that is, clasts that were formed on a different parent body than that of the host lithology. The occurrence of xenoliths is direct evidence for the exchange of material between asteroids, including exchanges between asteroids from the carbonaceous (CC) and non‐carbonaceous (NC) reservoirs ...
J. Gattacceca +17 more
wiley +1 more source
The Astronomical JournalHyperactive comet activity typically becomes evident beyond the frost line (∼3–4 au) where it becomes too cold for water-ice to sublimate. If carbon monoxide (CO) and carbon dioxide (CO _2 ) are the species that drive activity at sufficiently large ...
Dave G. Milewski +5 more
doaj +1 more source
Jasmonate biosynthesis regulates key events in barley vegetative and reproductive development
New Phytologist, EarlyView.Generation and general phenotypes of hvaoc mutants. Summary Cereal grain is a global food staple. Filial tissues in grain, such as the embryo and endosperm, grow embedded in the maternal ovule and surrounding ovary wall. Maternal tissues provide nutrition and protection but are progressively reduced and degraded as filial tissues expand, driving grain ...
Jian Luo +17 more
wiley +1 more source
The Astronomical JournalComets, relics from the early solar system, consist of dust and ice. The ice sublimates as comets approach the Sun, ejecting dust from their nuclei seen as activity.
Yuna G. Kwon +6 more
doaj +1 more source
Oral Diseases, EarlyView.ABSTRACT Objective To evaluate intraoral‐ultrasound (ioUS) features of benign and malignant oral lesions. Methods In this prospective cross‐sectional study, patients with oral soft tissue lesions underwent ioUS followed by biopsy within 2 weeks. Sonographic features: size, echogenicity, cystic areas, calcifications, margins, and vascularity were ...
Ragda Abdalla‐Aslan +9 more
wiley +1 more source
The Astrophysical JournalComet C/2023 P1 (Nishimura) was observed by the Solar Orbiter Heliospheric Imager (SoloHI), on board the Solar Orbiter spacecraft, from 2023 September 1 to 14.
Shaheda Begum Shaik +5 more
doaj +1 more source
Development of an Isoline Modeling Method for Extended Small Celestial Objects
Учёные записки Казанского университета: Серия Физико-математические наукиThis article presents a method for modeling extended small celestial (ESC) objects, which are mainly cometary systems. Special attention was given to the possibility of analyzing their structure and physical properties in line with the modern theories of
A. O. Andreev +2 more
doaj +1 more source
Psychology and Psychotherapy: Theory, Research and Practice, EarlyView.Abstract Objectives Mental health difficulties are rising amongst young adults in the United Kingdom, and access to mental health services is limited. Digital single‐session interventions (SSIs) offer free, scalable mental health support and may help to meet this treatment gap.
Tom A. Jenkins +7 more
wiley +1 more source
DEFENDING THE EARTH FROM LONG-PERIOD COMETS AND SNEAKY ASTEROIDS: SHORT TERM THREAT RESPONSE REQUIRES LONG TERM PREPARATION. [PDF]
J Space Saf Eng, 2018 Nuth JA, Barbee B, Leung R.
europepmc +1 more source
Down But Not Out: The Case of Long-period Comet C/2021 O3 (Panstarrs)
The Astronomical JournalWe combine ground- and space-based observations of long-period comet C/2021 O3 (Panstarrs; perihelion distance 0.287 au) in order to investigate its reported near-perihelion destruction.
David Jewitt +3 more
doaj +1 more source